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MySQL中MyISAM引擎和Heap引擎执行速度性能测试
【测试环境】
CPU: Intel Pentium4 2.66GHz
Memory: 1GB
Disk: 73GB/SCSI
OS: FreeBSD 4.11
PHP: PHP 5.2.1
MySQL: MySQL 4.1.23b
【 前期工作 】
[ my.cnf ]
max_heap_table_size=128M
[ 建表 ]
usetest;
--
--Storeengineheap
--
CREATETABLE`tbl_heap`(
`id`int(11)NOTNULLauto_increment,
`name`varchar(32)NOTNULLdefault'',
`email`varchar(32)NOTNULLdefault'',
`summary`varchar(255)default'',
KEY`id`(`id`)
)ENGINE=HEAPDEFAULTCHARSET=gbk;
--
--Storeenginemyisam
--
CREATETABLE`tbl_isam`(
`id`int(11)NOTNULLauto_increment,
`name`varchar(32)NOTNULLdefault'',
`email`varchar(32)NOTNULLdefault'',
`summary`varchar(255)default'',
KEY`id`(`id`)
)ENGINE=MyISAMDEFAULTCHARSET=gbk;
【插入数据】
说明:每次都是空表插入数据
[插入10000 Record]
Heap engine insert 10000 record used time: 3.5008587837219
MyISAM engine insert 10000 record used time: 4.5881390571594
[50000 Record]
Heap engine insert 50000 record used time: 19.895354986191
MyISAM engine insert 50000 record used time: 33.866044998169
[100000 Record]
Heap engine insert 100000 record used time: 36.200875997543
MyISAM engine insert 100000 record used time: 68.34194111824
[200000 Record]
Heap engine insert 200000 record used time: 68.00207901001
MyISAM engine insert 200000 record used time: 125.26263713837
【查询数据】
表里分表有:200000条记录,两个表数据一致
[直接select,10000次,每次取100条记录]
Heap engine select 10000 times, 100 record used time: 12.122506141663
MyISAM engine select 10000 times, 100 record used time: 19.512896060944
[直接select,1000次,每次取10000条记录]
Heap engine select 1000 times, 10000 record used time: 111.54126811028
MyISAM engine select 1000 record used time: 116.79438710213
[增加where条件,1000次,每次取10000条记录]
Heap engine select 1000 times, 10000 record used time: 111.52102303505
MyISAM engine select 1000 times, 10000 record used time: 117.68481087685
[where条件,10000次,每次从1000条起,取1000条记录]
Heap engine select 10000 times, 1000 record used time: 124.28988695145
MyISAM engine select 10000 times, 1000 record used time: 139.82107305527
[where条件增加like,10000次,每次从1000条起,取1000条记录]
Heap engine select 10000 times, 1000 record used time: 145.43780493736
MyISAM engine select 10000 times, 1000 record used time: 163.56296992302
[where条件增加索引,10000次,每次从1000条起,取1000条记录]
-- 建立索引 (在SQLyob下执行)
ALTER TABLE tbl_heap ADD INDEX idx_name (name);
ALTER TABLE tbl_isam ADD INDEX idx_name (name);
Heap engine alter table add index used time: 2.078
MyISAM engine alter table add index used time: 13.516
Heap engine select 10000 times, 1000 record used time: 153.48922395706
MyISAM engine select 10000 times, 1000 record used time: 239.86818814278
PS: 不合适的索引还不如不要。。。-_-#
[SQLyog下进行count操作]
Heap engine select count used time: 4.53
MyISAM engine select count used time: 3.28
[SQLyob下进行select操作]
速度都很快,都在1秒一下,不论是1000条记录,还是200000条记录,个人猜测可能不准确
【更新操作】
[更新所有name=heiyeluren的记录为heiyeluren2,在SQLyog下执行]
Heap engine update used time: 2.500
MyISAM engine update used time: 16.000
【删除操作】
[删除所有name=heiyeluren2的记录,在SQLyog下执行]
Heap engine delete used time: 51.172
MyISAM engine delte used time: 5.578
【总结】
Heap在插入、查询、更新操作上明显要比MyISAM快,但是删除操作稍微比较慢,可能跟它在内存中的存储结构有关系,所以我们完全可以把Heap作为我们一个MyISAM表的一个备份,比如可以保存一些实时性要求比较高的数据,比如点击量、评论量、固定的用户信息等等,因为这些信息普遍就是插入和查询操作。
当然了,Heap也没有比MyISAM快太多,这样说明我的MyISAM速度还是非常快的,所以一般情况下,MyISAM能够满足大部分的应用了,如果数据太多的情况,可以考虑把部分常用的数据保存到Heap表中,同时也可以结合Memcache等缓存工具来帮助缓存数据。
另外,关于InnoDB和MyISAM的性能测试,可以参考我之前的测试数据:
http://blog.csdn.net/heiyeshuwu/archive/2007/04/10/1559640.aspx
【测试代码】
<?php
/**
*functionlib
*/
functionconn(){
$host="localhost";
$user="root";
$pass="";
$db="test";
$conn=mysql_connect($host,$user,$pass);
if(!$conn||!is_resource($conn)){
die("Connecttomysqlfailed:".mysql_error());
}
mysql_select_db($db);
return$conn;
}
functionquery($conn,$sql){
$res=mysql_query($sql,$conn);
if(!$res){
echomysql_error()." ";
returnfalse;
}
returntrue;
}
functionget_data($conn,$sql){
$res=mysql_query($sql,$conn);
if(!$res){
echomysql_error()." ";
returnfalse;
}
$result=array();
while($row=mysql_fetch_array($res)){
$result[]=$row;
}
return$result;
}
functionget_time()
{
list($usec,$sec)=explode("",microtime());
return((float)$usec+(float)$sec);
}
/**
*Inserttest
*/
$conn=conn();
$count=200000;
//Heapengine
$s1=get_time();
for($i=0;$i<$count;$i++){
query($conn,"insertintotbl_heapsetname='heiyeluren',email='heiyeluren@abc.com',summary='Thismessageissummary'");
}
$e1=get_time();
echo"Heapengineinsert$countrecordusedtime:".($e1-$s1)." ";
//MyISAMengine
$s2=get_time();
for($i=0;$i<$count;$i++){
query($conn,"insertintotbl_isamsetname='heiyeluren',email='heiyeluren@abc.com',summary='Thismessageissummary'");
}
$e2=get_time();
echo"MyISAMengineinsert$countrecordusedtime:".($e2-$s2)." ";
/**
*Selecttest
*/
$count=1000;
$records=10000;
$s1=get_time();
for($i=0;$i<$count;$i++){
$res=get_data($conn,"select*fromtbl_heaplimit$records");
unset($res);
}
$e1=get_time();
echo"Heapengineselect$countrecordusedtime:".($e1-$s1)." ";
$s2=get_time();
for($i=0;$i<$count;$i++){
$res=get_data($conn,"select*fromtbl_isamlimit$records");
unset($res);
}
$e2=get_time();
echo"MyISAMengineselect$countrecordusedtime:".($e2-$s2)." ";
?>
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